<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>vue v-for的使用</title>

    <script src="vue.js"></script>
</head>
<body>
    <div id="app">

        <input type="button" @click="toggle">

        <h3 v-if="flag">这是一个v-if控制的元素</h3>
        <h3 v-show="flag">这是一个v-show控制的元素</h3>

    </div>

    <script>
        var vm = new Vue({
            el: '#app',
            data: {
                flag: true
            },
            methods: {
                toggle(){
                    this.flag = !this.flag
                }
            }
        })
    </script>
</body>
</html>